91 results about "Toluidine" patented technology

The invention belongs to the technical field of organic photoelectric materials, and particularly relates to preparation and application of a benzoselenadiazole covalent organic framework material. According to the invention, benzoselenadiazolyl tetraaldehyde is used as a construction unit, o-toluidine, 4, 4 '-biphenyl diamine or 3, 3'-dihydroxybenzidine is used as a connecting body, and three kinds of novel rigid COFs, namely HBU-COF-CH3, HBU-COF-H and HBU-COF-OH, are synthesized in sequence. The COFs has high cycling stability, has outstanding advantages in the aspect of sustainable heterogeneity of molecular catalysts, and can be used as a heterogeneous photocatalyst to realize efficient hydrogen peroxide production under visible light, and the photocatalytic hydrogen peroxide production performance of the COFs is superior to that of most reported COFs materials. Wherein the yields of HBU-COF-CH3, HBU-COF-H and HBU-COF-OH are as high as 12910 [mu] mol g <-1 > h <-1 >, 8838 [mu] mol g <-1 > h <-1 > and 7679 [mu] mol g <-1 > h <-1 > in sequence.

The invention belongs to the technical field of high polymer material preparation, and particularly relates to a solar interface evaporator with a cross-linked double-layer structure and application. The preparation method comprises the following steps: carrying out primary reaction on 4, 4 '-diphenyl ether dianhydride and biphenyl carboxylic acid, or hexafluorodianhydride, 9, 9-bis (trifluoromethyl)-2, 3, 6, 7-xanthene tetracarboxylic dianhydride and m-bitoluidine in a solvent, blocking by using maleic anhydride to form a polyamide acid solution, adding triethylamine to carry out catalytic reaction, washing, precipitating, filtering and drying to obtain a precursor A and a precursor B; then respectively preparing the precursor A and the precursor B into aqueous solutions, and then adding a photo-thermal material graphene into the aqueous solution B; then, the precursor A solution is poured into a mold to be frozen, then the solution B mixed with the graphene is poured into the mold, freezing and thermal imidization are conducted again, the cross-linked solar interface evaporator of the double-layer structure is obtained, and the evaporator has wide application prospects in the aspects of seawater desalination and sewage treatment.

The invention relates to the field of anti-aging agents DTPD, and particularly discloses a preparation method of the anti-aging agent DTPD. The preparation method of the anti-aging agent DTPD comprises the following steps: mixing aniline and o-toluidine, stirring, heating to 50-60 DEG C, adding hydroquinone and a catalyst, carrying out condensation reaction at 100-250 DEG C, removing evaporated water in the reaction process, and stopping the reaction until water cannot be evaporated; cooling to 100-140 DEG C, filtering while the mixture is hot, and distilling to remove impurities, so as to obtain the anti-aging agent DTPD; the catalyst is selected from one or more of benzene sulfonic acid, benzene disulfonic acid, p-toluenesulfonic acid, p-aminobenzene sulfonic acid, aniline trisulfonic acid and sulfonated halloysite. The preparation method disclosed by the invention has the advantages of high content of effective components in the product, simplicity and convenience in operation and safety.

The invention relates to a non-noble metal catalyst Cu / TiO2-P25, a preparation method thereof and application of the non-noble metal catalyst Cu / TiO2-P25 in synthesis of N, N-dimethyl-p-toluidine from formaldehyde and N-methylaniline, and belongs to the field of catalysts. According to the catalyst, copper nitrate trihydrate serves as a copper source, P25 type TiO2 serves as a carrier, metal is loaded on the P25 type TiO2 through a deposition-precipitation method, the catalyst Cu / TiO2-P25 is obtained through hydrogen reduction in a tubular furnace, then the catalyst Cu / TiO2-P25 is dispersed in a solvent, and hydrogen serves as a hydrogen source to catalyze formaldehyde and N-methylaniline to synthesize N, N-dimethyl p-toluidine. Wherein the Cu / TiO2-P25 catalyst with the copper content of 6% has excellent catalytic performance, and when the hydrogen pressure is 3.5 MPa, the temperature is 180 DEG C and the reaction is performed for 8 hours, the conversion rate of N-methylaniline reaches 100%, and the selectivity on N, N-dimethyl-p-toluidine is 50.8%. The preparation method is simple and low in production cost, is used for catalyzing formaldehyde and N-methylaniline to synthesize N, N-dimethyl-p-toluidine, and has a wide industrialization prospect.

The invention discloses high-wear-resistance tread rubber for a mine tire and a preparation method of the high-wear-resistance tread rubber, and relates to the technical field of tires. According to the invention, the ATT-Si / AL additive is creatively introduced and used together with carbon black as a wear-resistant main body, and an alkaline accelerator formaldehyde p-toluidine condensation compound and a conventional accelerator are synergistically applied to a wear-resistant tread rubber system for the first time; wherein the accelerator formaldehyde-p-toluidine condensation compound not only provides flat vulcanization characteristic and excellent aging resistance for the rubber material, but also solves the problems of'filler-rubber 'interface weakening and stress concentration caused by high-hardness filler by activating silanization reaction and catalyzing covalent bonding between a sulfur cross-linked network and a rigid filler interface through the alkalinity of the accelerator formaldehyde-p-toluidine condensation compound; the ATT-Si / AL additive and the accelerator formaldehyde p-toluidine condensation compound cooperate to form a physical-chemical dual enhanced network, so that the tread rubber keeps high strength and high wear resistance level under extreme wear.

The present invention belongs to the field of microbial culture and identification technology, and provides a Candida chromogenic culture medium and its preparation method and application. The present invention utilizes a specific concentration of chlorinated nitro blue tetrazolium, 5-bromo-4-chloro-3-indolyl phosphate p-toluidine salt, and 5-bromo-6-chloro-3-indole-β-D-galactoside as the main color-developing component in the Candida chromogenic culture medium, and further utilizes the Candida chromogenic culture medium of the present invention to cultivate different types of Candida for a period of time, and can display different colors according to different types of Candida, wherein Candida albicans can display obvious red, which is different from the colors of other types of Candida, and the red colony is not only conspicuous, but also easier to identify than light green or green colonies, and can be well distinguished from the colors of other colonies, so that identification personnel can directly observe and identify Candida albicans with the naked eye.

The application provides a process and equipment for removing m-methylaniline and indole in coking nanofiltration concentrated water, a catalyst and a preparation method thereof, and the water quality of the coking nanofiltration concentrated water is as follows: conductivity 21300-34560 muS / cm, sulfate ion 567-1340 mg / L, m-methylaniline 45-78 mu g / L, and indole 23-39 mu g / L; the process comprises the following treatment steps: the coking nanofiltration concentrated water enters the ozone catalytic tower from the bottom of the tower and flows out from bottom to top, and the ozone catalytic tower is internally provided with a modified peanut shell biochar catalyst; after the ozone catalytic reaction, the water quality of the coking nanofiltration concentrated water is as follows: conductivity 21300-34560 muS / cm, sulfate ion 567-1340 mg / L, m-methylaniline 3-7 mu g / L, and indole 1-6 mu g / L.

The invention provides a method for realizing zero sewage discharge of a 2, 5-diaminotoluene sulfate product, and belongs to the technical field of chemical engineering. Compared with the current method for applying part of wastewater (about 20 tons of wastewater is produced per ton of product) in a factory, the method for realizing zero sewage discharge of the 2, 5-diaminotoluene sulfate product comprises the following steps: extracting and recovering part of o-toluidine by using an extracting agent; the residual wastewater is subjected to Fenton oxidation and triple-effect evaporation to obtain wastewater meeting the discharge standard, and the wastewater is discharged to a sewage treatment plant, so that zero discharge of sewage can be realized.

The invention belongs to the field of reactive dye synthesis, and discloses a preparation process of a reddish brown reactive dye, which comprises the following steps: diazotizing 2-naphthylamine-4, 6, 8-trisulfonic acid, coupling with 1-naphthylamine-7-sulfonic acid to obtain a first-couple material, diazotizing the first-couple material again, coupling with m-toluidine to obtain a second-couple material, refining the second-couple material to obtain a color base, and drying to obtain the reddish brown reactive dye. Carrying out primary condensation on cyanuric chloride and 2, 5-aniline disulfonate to obtain a primary condensation material, carrying out secondary condensation on the primary condensation material and a color base, and filtering the secondary condensation slurry to obtain the reddish brown reactive dye primary stock. The preparation process provided by the invention is stable and low in spray drying energy consumption, and the prepared primary pulp has the advantages of high purity and high solid content, and is excellent in solubility and high in fastness to washing.

The invention relates to the technical field of pharmaceutical preparations, in particular to a preparation process of crotamiton and an external preparation applied by the crotamiton. Comprising the following steps: step 1, slowly dropwise adding 2-butenoyl chloride into N-ethyl-o-toluidine, and controlling the reaction temperature at 10-30 DEG C; after the reaction is finished, heating to 45-55 DEG C, and reacting for 2-4 hours to obtain a product A; adding purified water for dilution, adding a demulsifier, and adding ethyl acetate for extraction to obtain an organic phase; 2, washing the organic phase with a hydrochloric acid solution and a sodium hydroxide solution in sequence, performing liquid separation, performing reduced pressure distillation, collecting fractions at the temperature of 152-155 DEG C and the pressure of-0.096 to-0.1 Mpa, performing refined filtration with a 0.2-0.24 [mu] m filter element in sequence, performing filling, performing capping, and performing packaging; and thus, the crotamiton is obtained. And preparing a medicine solution from crotamiton and other substances, and combining the medicine solution with the pre-gel solution to obtain the external preparation of crotamiton.

The present invention discloses a preparation method of 2-amino-5-chloro-N,3-dimethylbenzamide, belonging to the technical field of organic synthesis. Specifically, o-toluidine is used as a raw material, and after chlorination, Friedel-Crafts acylation, oxidative ring opening and formamidation, 2-amino-5-chloro-N,3-dimethylbenzamide is obtained. The method of the present invention has easily available raw materials, simple process operation, mild reaction conditions, high product yield and less three-waste emissions, and is suitable for industrial production.

The present invention relates to a synergistic antiknock fuel additive comprising a mixture of N-methyl-p-anisidine and m-toluidine in a volume ratio from 45:55 to 95:5; to the use of said fuel additive to increase the octane rating of a gasoline; and to a gasoline fuel composition comprising said fuel additive.

The invention belongs to the technical field of phase change material preparation, and particularly relates to a high-stability composite phase change material and a preparation method thereof. According to the method, an organic solid-liquid phase change material is taken as a solvent, a reaction monomer octadecyl acrylate and a cross-linking agent 1, 6-hexanediol diacrylate are subjected to a cross-linking reaction through a redox initiation system (benzoyl peroxide and N, N-dimethyl-p-toluidine), and the solid-liquid phase change material is prepared. A phase-change high-molecular polymer with a phase-change function is constructed, a coating structure is formed on the organic solid-liquid phase-change material, and finally the composite phase-change material with excellent thermal stability and high latent heat characteristics is prepared. The preparation process disclosed by the invention can be carried out under a low-temperature condition, energy consumption and production cost can be effectively reduced, the process is simple, and batch production is easy; the prepared composite phase change material has wide application prospects in the fields of energy storage, temperature control and the like.

This invention discloses a self-microporous polymer, a self-microporous ion exchange membrane, its preparation method, and its applications, belonging to the field of polymer materials technology. The polymer uses 1,3,5-tris(4-aminophenyl)benzene (TAPB), o-toluidine (DMBP), and dimethylformaldehyde as monomers. Utilizing the rigid, distorted, and non-densely stacked molecular structures of TAPB and DMBP, a polymer material with an inherent sub-nanometer microporous structure and its corresponding homogeneous ion exchange membrane are prepared. The formed self-microporous structure constructs continuous ion transport channels within the membrane, where the sub-nanometer-scale micropores impart a significant size sieving effect, thereby achieving selective separation of monovalent / polyvalent anions. Furthermore, by quaternizing the membrane material, fixed positively charged groups are introduced onto the polymer backbone. These positively charged groups generate significant electrostatic repulsion, enabling selective separation of monovalent / polyvalent cations, particularly suitable for the efficient separation of lithium and magnesium ions.

The invention provides a method for preparing 3,3'-dimethyl-4,4'-diaminodiphenylmethane by using a dynamic tubular reactor, and belongs to the field of organic material synthesis. The invention uses o-toluidine and formaldehyde as raw materials, and catalytically synthesizes 3,3'-dimethyl-4,4'-diaminodiphenylmethane in a dynamic tubular reactor under the action of a catalyst. The invention is simple to operate, has accurate control of reaction conditions, short reaction time, good reaction selectivity, and high product purity.

The invention belongs to the technical field of fungaltoxin detection, and particularly relates to a Raman beacon COF nanoflower and a preparation method and application thereof. The method comprises the following steps: dissolving trialdehyde phloroglucinol, o-bitoluidine and polyvinylpyrrolidone in methanol, carrying out ultrasonic uniform mixing, adding a catalyst to carry out a reaction, adding benzaldehyde after the reaction is finished, continuously carrying out a standing reaction, centrifuging, washing and redissolving to obtain TpDBD-COF nanoflowers, dissolving the TpDBD-COF nanoflowers in a mixed solution of ethanol and water, adding AgNO3, carrying out ultrasonic adsorption, and carrying out vacuum drying to obtain the TpDBD-COF nanoflowers. After adsorption is finished, trisodium citrate is added for a heating reaction, centrifugation, washing and redissolution are performed, and the Raman beacon COF nanoflower is obtained. The COF nanoflower prepared by the invention has a highly enhanced stable Raman signal, the surface group has the advantage of being directly used for biomolecule coupling, and the COF nanoflower can be specifically used for sensitively detecting T-2 toxin in a sample.

The present invention provides a bone filling material and a preparation method and application thereof, belonging to the technical field of medical materials for repairing bone defects. The bone filling material includes a powder and a liquid, and the amount of the powder added in the unit volume of the liquid is 1.5-2.5g; wherein, by mass percentage, the powder includes: a composite material 10-89.99%, a first acrylic polymer 0-59.5%, a developer 10-50%, and benzoyl peroxide 0.01-3%; by mass percentage, the liquid includes: a first acrylic monomer 94.5-99.98%, N, N-dimethyl-p-toluidine 0.01-5%, and an inhibitor 0.01-0.5%; the above-mentioned composite is a copolymer or blend formed by a second acrylic polymer and a siloxane compound, or a copolymer or blend formed by a second acrylic polymer, a siloxane compound and methacrylate silane.

The application provides a method for synthesizing 4,4'-diamino-3,3'-dimethyl biphenyl methane, and belongs to the field of organic catalytic synthesis. The method is characterized in that o-toluidine and formaldehyde are used as raw materials, a catalyst and a reaction solvent are added, and 4,4'-diamino-3,3'-dimethyl biphenyl methane is catalytically synthesized. The synthesis route of the application has the advantages of simple reaction operation, mild conditions, avoidance of the use of hydrochloric acid, recyclability of the catalyst, high conversion rate and selectivity of the experiment, and convenience of post-treatment.

To provide a propoxylated 4-toluidine that does not have the disadvantage of N,N-bis(2-hydroxypropyl)-p-toluidine, but can be used at least just as well or better as a polymerization accelerator or as a vulcanization accelerator or as a hardener component for epoxy resins in the polymer systems in which N,N-bis(2-hydroxypropyl)-p-toluidine can be used.SOLUTION: The invention relates to mixtures of propoxylated 4-toluidines containing two or more different di- or tri-propoxylated or higher propoxylated p-toluidines in specific weight ratios, to methods for preparing them and to their use as polymerization accelerators or vulcanization accelerators or as hardener components in epoxy resins.SELECTED DRAWING: None

This application belongs to the technical field of mycotoxin detection technology, specifically relating to a Raman beacon COF nanoflower, its preparation method, and its application. The method involves dissolving trialdehyde phloroglucinol, o-toluidine, and polyvinylpyrrolidone in methanol, ultrasonically mixing, adding a catalyst for reaction, adding benzaldehyde after the reaction, allowing the mixture to stand, centrifuging, washing, and redissolving to obtain TpDBD-COF nanoflowers. These nanoflowers are then dissolved in a mixed solution of ethanol and water, followed by the addition of AgNO3 and ultrasonic adsorption. After adsorption, trisodium citrate is added for heating reaction, centrifuging, washing, and redissolving to obtain the Raman beacon COF nanoflowers. The COF nanoflowers prepared by this invention exhibit a highly enhanced and stable Raman signal, and their surface groups have the advantage of being directly used for biomolecule coupling, specifically for the sensitive detection of T-2 toxin in samples.

This invention discloses a method for synthesizing methyl amino-methyl-phenylcarbamate compounds from p-toluidine. The method uses p-toluidine as a raw material, employs anhydrous zinc acetate catalyst and the green solvent dimethyl carbonate, to first prepare methyl p-toluylcarbamate, followed by one-step direct amination to prepare methyl 2-amino-4-methylphenylcarbamate and methyl 3-amino-4-methylphenylcarbamate. This invention has advantages such as readily available raw materials, an environmentally friendly reaction process, high atom utilization, and a first-step reaction yield of up to 96% and a second-step reaction yield of up to 35.7%.

The present invention relates to a process for the preparation of toluene-2, 5-diamine or a salt thereof. The invention also relates to a method for preparing the toluene-2, 5-diamine sulfate. According to the method, carcinogenic and allergenic raw materials (such as o-toluidine) are not used, a brand-new synthesis route is adopted, and the method has the advantages that the used initial raw materials are easy to obtain, the reaction environment is safe, operation is easy, an intermediate is stable and easy to separate, and no use-prohibited components (such as o-toluidine) are used or generated.

The invention provides a continuous flow preparation method of m-cresol and a continuous flow preparation device of m-cresol. A continuous flow preparation method of m-cresol comprises the following steps: (1) pumping dilute sulphuric acid and m-toluidine into a first-stage microchannel reactor at the reaction temperature of 25-35 DEG C to obtain an m-toluidine sulfate solution; (2) cooling the m-toluidine sulfate solution to 5 DEG C, and dispersing the m-toluidine sulfate solution into 0.5-5 [mu] m liquid drops by a high-speed disperser; pumping the liquid drops and a diazotization reagent into a secondary microchannel reactor, and reacting at the temperature of-5 DEG C to 5 DEG C to obtain diazonium liquid; wherein the content of intermediate toluidine in the liquid phase of the diazo liquid is less than 0.5%; (3) pumping the diazonium liquid and methylbenzene into a three-stage microchannel reactor, and reacting at 75-90 DEG C to obtain hydrolysate; and (4) cooling the hydrolysate to normal temperature, carrying out phase separation to obtain an organic layer and an acid water layer, washing and rectifying the organic layer to obtain a m-cresol finished product, extracting the acid water layer, and discharging the extracted acid water layer. The yield of the m-cresol obtained by the method is obviously improved, and the environmental pollution is reduced.

The present application relates to the field of chemical synthesis technology, and specifically discloses a preparation process of dehydrogenated thio-p-toluidine. A preparation process of dehydrogenated thio-p-toluidine, comprising the following steps: S1. raw material p-toluidine and sulfur are heated to liquid state respectively, and an alkali catalyst is added to the sulphur liquid; S2. at a temperature of 165-170 ° C, p-toluidine liquid and sulphur liquid are sprayed simultaneously into a mixer from different inlets, and a reaction product is obtained under the action of an alkali catalyst; S3. as the step S2 is carried out, the reaction product formed by the reaction is crystallized and filtered to obtain a filter cake and a filtrate, and the filter cake is washed and dried to obtain dehydrogenated thio-p-toluidine. The preparation process of the present application prepares dehydrogenated thio-p-toluidine, and the yield can reach 86.6wt%-87.7wt%, and the purity can reach 96.3wt%-96.7wt%, and the dehydrogenated thio-p-toluidine produced not only has a high yield, but also has a high purity.

The present application provides a long-life low-friction grease composition and a preparation method thereof. The grease composition comprises the following raw materials by weight: 20-35 parts of high-alkaline calcium sulfonate, 50-65 parts of base oil, 2-6 parts of diisocyanate, 1-5 parts of p-toluidine, 0.5-2 parts of urea, 1-4 parts of conversion agent, 1-2 parts of calcium carbonate, 1-2 parts of calcium hydroxide, 1-4 parts of small-molecule acid, 3-5 parts of fatty acid, 0.5-2 parts of solid friction-reducing agent, 0.5-3 parts of antioxidant, 0.5-2 parts of surfactant, and 0.5-2 parts of passivator. The grease composition has excellent friction-reducing capacity and extreme pressure performance, and has a long service life.

The invention discloses a preparation method of a fadable ink ingot, and relates to the technical field of ink ingots. Comprising the following steps: step 1, taking a yellow fluorane dye 3, 6-dimethoxyfluorane, adding a color developing agent powder, and mechanically stirring until the color is developed to obtain a yellow fluorane pigment; step 2, taking cyan fluorane dye 3-diethylamino-6-methyl-7-phenylaminofluorane, adding the color developing agent powder, and mechanically stirring until the color is developed to obtain a cyan fluorane pigment; step 3, taking a red fluorane dye 6-(N-ethyl-4-toluidine)-2-methylfluorane, adding the color developing agent powder, and mechanically stirring until the color is developed to obtain a red fluorane pigment; 4, mixing the yellow fluorane pigment, the cyan fluorane pigment and the red fluorane pigment according to a certain proportion to obtain a mixed black pigment; 5, taking a certain amount of glue, heating to prepare a glue solution, sequentially adding a black pigment, an auxiliary agent and the like, and uniformly mixing to obtain a blank; and 6, rubbing the obtained blank into ink fruits according to specifications, pressing the ink fruits into an ink mold for forming, and airing to finally obtain the ink ingot. The defects that ink stains contaminate clothes and calligraphy practicing paper is difficult to decolor are overcome.

The present invention discloses a high-toughness non-woven fabric for homogeneous bags and a preparation method thereof, relating to the field of new materials technology. The high-toughness non-woven fabric for homogeneous bags produced in the present invention is produced by post-finishing a hydrophilic polyethylene non-woven fabric with a finishing agent. The hydrophilic polyethylene non-woven fabric is produced by first grafting glycidyl methacrylate onto the surface of the polyethylene non-woven fabric by electron beam radiation and then reacting with hydrophilic polylactic acid, thereby enhancing the hydrophilicity of the polyethylene non-woven fabric. The modified polyether ester is produced by reacting a modified phenolic resin with 2,5-furandicarboxylic acid and then with tributyl citrate. The modified phenolic resin is produced by reacting a phenolic resin with o-toluidine, thereby enhancing the toughness of the non-woven fabric.

The invention discloses an m-toluidine compound, a preparation method thereof and application of the m-toluidine compound in a thermosensitive color developing agent, and relates to the technical field of color developing agents. The invention discloses a m-toluidine compound which is # imgabs0 #. Compared with a contrast product, the thermosensitive color developing agent prepared by the invention has the advantages that the overall activation temperature is reduced, the color developing reaction is easier to trigger, the color developing temperature range is widened, and the differential requirements of more different application scenes on the temperature can be met. The temperature-sensitive color developing agent prepared from the m-toluidine compound has higher color developing contrast and more obvious color depth in color developing effect, can present clearer and brighter color developing result, and is beneficial to improving the visual effect of a temperature-sensitive color developing technology in scenes such as temperature-sensitive printing and the like.

The invention discloses low-modulus bone cement and a preparation method thereof. The solid-to-liquid ratio of powder to liquid is (2g-3g): 1mL; the powder is prepared from the following raw materials in percentage by mass: 52 to 89.5 percent of acrylic resin, 10 to 40 percent of barium sulfate and 0.5 to 8 percent of powdery phospholipid; the liquid is prepared from the following raw materials: 0.5 percent to 5 percent of N, N-dimethyl p-toluidine, 0.05 percent to 2 percent of hydroquinone and 93 percent to 99.45 percent of methyl methacrylate. The powdery phospholipid is introduced into the bone cement powder to modify the bone cement, so that the overhigh elastic modulus of the bone cement is reduced, and secondary injuries such as fracture of adjacent vertebral bodies caused by the high elastic modulus after the bone cement is filled are prevented. Meanwhile, the powdery phospholipid is uniformly distributed in the bone cement, so that the requirement that the bone cement compression strength is greater than or equal to 70MPa according to a bone cement forcing standard is met, and the requirement of human body mechanical strength support is ensured.

The application discloses a cold storage and heat preservation plastic foam and a preparation method thereof. The combined material formula comprises a boric acid polyether polyol and a high-hydroxyl-value o-toluidine polyether polyol. The boric acid polyether polyol has a characteristic of a triangular stable structure of boron atoms, and can improve the strength and dimensional stability of a plastic product and delay the attenuation of the strength and dimensional stability of the plastic product in application. The boric acid polyether polyol contains a part of insoluble B=O structure, which is easy to precipitate in the early stage of the reaction of the combined material with isocyanate, forms stable nucleation points, and through the synergistic effect of the high-hydroxyl-value o-toluidine polyether polyol, the cross-linking of product foam fibers is enhanced, the bubbles are inhibited and the bubbles are made more delicate, and the thermal conductivity of the product is reduced. The rapid cross-linking can reduce the volatilization of a foaming agent and reduce the surface bubbles at the end of product flow.